Typewriting machine



A. G. F. KUROWSKI.

TYPEWRITING MACHINE.

APPLICATION FILED JUNE25, 1920.

Patented May 9, 1922'.

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NITED STATES ALFRED e. r. xunowsxr or BnooxLYn, TYPEWR'ITER COMPANY, or NEW YORK,

NEW YORK, ASSIGNOR TO UNDER-WOOD N. Y., A CORPORATION OF DELAWARE.

ryrnwrtirme MACHINE.

' Specification of-Letters Patent.

Patented May 9, 1922.

Application filed June 25, 1920. Serial No. 391,675.

To all 'wkom it may concern:

. sin, a' citizen of the of being swung to and from the Be it known that I ALFRED G. F. KUROW- United States, residing in Kings, city and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to the paper-feeding devices of typewriting machines, and is illustrated in connection "with an Underwoodtypewriting machine. Certain features are disclosed in the application of William F. Helmond, Serial No. 372,431, filed April 9, 1920, in which front upper upon the usual platen, said feed-rolls capable platen. ,The devices shown in said application are applied to ordinary typewriter carriages, but the shaft which carries these upper feed-rolls is necessarily thin, and would yield if made of such length as to be suitable for pressing the rolls against a long platen, and the rolls would therefore fail to properly hold worksheets upon the platen. v

To overcome this difliculty, the swinging support which carries the long feed-roll shaft is constructed with a stiffening rod, and a brace or braces are slidable thereon, said braces also connecting with the feedroll shaft, with the result that the shaft and the rod, taken together with their supports and braces, form a truss device. The feed:

. rolls are journaled upon the feed-roll shaft between U arms, forming part of the brace, with the result that'the brace has most effect .at the point where the feed-roll bears upon the platen.

Other features and advantages will hereinafter appear. y

In the accompanying drawings, Figure 1 is a plan view of a shift frame of the ,kind on machine described, showing the present invention as applied thereto. Figure 2 is a secti'onfthroughan upper front feed-roll, its adjacent brace, and also showing the shafts.

Figure 3 is a sectional side view-of the partsv seen in Figure 1. Figure 4 is a fragmentary perspective View, showing the relationship of a brace to its twoshafts.

The usual Underwood platen 1 is journaled by its axle 2 in ends 3 and 4 forming part of a platen shift frame, which also in- Brooklyn 'Borough, in the county of feed-rolls run said screws 20 and 21 being adapted to fit cation, by which they bear .15, each hub being freely slidable through 24 are anchored, said arms.

cludes a rear paper table 5 and rear and front bottom feed-rolls 6 and 7. When it is desired to hold a work-sheetclosely to the platen about the rinting line, upper front feed-rolls 8, slida 1y journaled upon a rod or shaft 9 extending along the platen 1, may be swung against the platen by pressing rearwardly upon a finger-piece 10 to swing the supports 11 of the shaft 9 rearwardly,rotating the supports with their shafts 12 and. 13 which are journaled in extensions 15' of brackets 16 upon the frame ends 3 and 4. The brackets 16 are detachably mounted upon said ends, and, for this purpose, comprise rearward extensions 17, each having a forked end 18 adapted to slip under a head 19"of a shouldered screw 20, the front end of each bracket fitting against a shouldered screw .21 at the front of the shift frame,

in the screw holes for the usual cover plate screws of the ends. closely 0 iposen the latter to insert or remove the In order to detachably hold the front ends of the brackets 16 by the screws 21, eachbracket 16 is provided with a catch 22 pivoted thereto at 23, and adapted to be normally pressed by its spring 24, so that its edge 25 catches beneath one side of the shouldered screw 21. To enable the brackets 16 to be removed, the catches 22 are adapted to be swung against the tension of their s rings 24, being for this purpose provide with finger-pieces 26 and with guide-slots 27, which engage under a headed pin 28 to limit the throw when the finger-piece is actuated. The catch may be substantially identical with the catch shown in the application aforesaid.

The shafts12 and 13 are provided with enlarged hubs 29, as described in said appli- If the fork 18 fits very its extension 15, asiclearly set forth in said" ap lication. I

norder to hold the'shaft 9 to keep its 1 provided cam arms 30in which the. springs I adapted to' bear against outside cam extensions 31 of the shafts-12 and 13 to hold the rolls '8. down against the platen. The extensions 15 may be provided with enlarged hearings or jourto the screw 20, it may be necessary in the extensions feed-rolls -8 against the platen 1, thereare...

nals 32 for the hubs 29, and one of these journals may be provided with a ledge 33, adapted to be en aged by a pin 34 to limit the rotation oft e shafts 12 and 13 when swung away from the platen.

In accordance with the present invention, in order to give suflicient stiffness to the device to enable the feed rolls 8 to bear firmly against the platen of a long typewriter carrla e, and to prevent the shaft or bar 9 from yie ding in the long distance between its two supports 11 in such a machine, there is provided a stifl'ener comprising a second bar or stiffening rod or shaft 35 fast in the supports 11, and advantageously placed radially of the platen outside the shaft 9, in the rollurging position of the latter. The shaft 35 may be of considerably greater diameter than the shaft 9, if desired, since it does not need to be small enough to be embraced by the feed-rolls. In order to stide'n or brace the lighter shaft 9 from thenearby stifi shaft 35, there is provided a brace member having a body 36, which engages the shaft 35 close- 1y, but is slidable thereon, said body cornprising integral extensions 37 forming a U,

p which are bored to slidably but closely-fit the shaft 9, with the result that the radial thrust of the shaft '9, when its rolls bear against the platen, is taken by the shaft 35 or largely shared by said shaft. Usually there will be a series of braces 36, and each brace may advantageously have lying between its U extension arms 37 a feed-roll 8, said feed-rolls, as described in said application, comprising a rubber surface 38, confined by a head 39 on a body or barrel 40, in which is mounted a friction clasp or collar 41; The feed-rolls 8 also comprise a screw 42, having ahead 43 adapted to be screwed down to confine the clasp 41 within the barrel, and the peripheral part 38 on the body 40. w

It has been found that the structure described forms a truss device admirably adapted to receive the strain of the feedrolls 8 when bearing against a long laten and prevent the shaft 9-from yielding. oreover, the brace body 36 forms afinger-piece for sliding the rolls 8 along the rod. As herein shown, there are two feed-rolls 8, each having its own brace 36. Since the two rods 9 and 35 are located radially of the platen, the shaft or rod 35 has substantially no more efiect in obscuring the typewritten matterupon the work-sheet'than t e-shaft 9.

It is to be noted that the stifiening rod or bar 35 extends along the full length of and is substantially coterminous with the lighter journal-forming rod 9, and that the adjacent ends of these rods 01'' bars are firmly tied together by the supports 11.

When it is not desired to use the feedrolls 8, the finger-piece 10 is actuated as described, and the two rolls take the dottedline position shown in Fre 3, in which thgy are clear of interfering parts;

ariations-may be resorted to within the scope of the invention, and portions of the iin rovements may be used without others. 7 l aving thus described my invention, c aim:

l. In atypewriting machine, the combina-,

tion with a platen and a laten frame having ends, of an upper fee -roll to run upon the platen, a shaft upon which said roll is slidably' journaled, supports for said shaft in said ends, a second stifi'ening shaft located radially of the platen in front of the first slidable brace engaging both'of said shafts and-connected to slide with the feed-roll.

3. In a typewriting machine, the combination with a platen and a platen frame having ends, of an upper feed-roll to runupon the platen, a rod device upon which the roll is slldably revoluble, astiflener for-the; rod extending longitudinally thereof, brackets on said ends, and a support on'eachbracket for the adjacent ends of the rod andstifiener and rotatable upon its bracket to move the roll to and from the platen.

4. In a front-strike typewrlting machine,

the combination with a traveling platen carriage,of a platen frame in said carriage, upper front feed-rolls adapted to press worksheets against the platen above the printing line, a pair of rods for supporting said front rolls, a support at each end of the platen frame for the outer endsof both rods, and a slidable' brace connecting the rods and supporting the feed-roll to slide with the adjacent feed-roll along-the rods.

5.111). a front-strike typewriting machine,- the 'combination with a: traveling carriage and a platen frame, of a platen, a red" jacent the platen forming a journal, an encircling feed-roll slidable along said rodvas a journal to hold work-sheets upon the platen above the "rintin line, a 'stifiening rod adjacent the rst ro and a brace slidable upon said-rods and closely engaging both to stifien the journal rod and adapted "to slide the feed-roll with it. i

6. Ina front-strike typewriting. machine,

the combination with a traveling parriage and a platen frame, of a platen, a. rod adjacent the platen forminga journal, an encircling feed-roll. slidable along said rod as a journal to hold work-sheets u on the platen above the printing line, a sti ening rod adjacent the first rod, and a brace having arms embracing said feed-roll so that the sliding of thebrace slides the feed-roll, said brace closely embracing both rods to stiffen the journalrod by the stiffening rod.

7. Ina frontfstrike typewriting machine,

Y the combination with a traveling carriage and a platenframe, of a platen, a rod adjacent the platen forming a journal, an

encircling feed-roll slidable along said rod as ajournal to hold work-sheets upon the platen above the printing line, a stiffening rod adjacent the first rod, a brace slidable the combination with a traveling carriage and a platen frame of a platen, a rod' adjacent'the' platen forming a journal, an encircling feed-roll slidable along "said rodas a'journal tohold work-sheets upon the platen above the printing line, a stiffening rod ad jacent the first rod, supports tying together the adjacent ends of the rods, a brace having arms embracing said feed-roll, so that the sliding of the brace slidesthe feed-roll, said brace closely embracing both rods'to stiffen the journal rod by the stiffening rod, and a mounting for said rods to enable them to be swung away from the platen to carry the feed-roll clear of the platen.

9. In a typewritingmachine,the combi nation with a platen and a platen frame, of a stiff rod supported near the platenby said frame, a. finger-piece slidable along said rod, a lighter rod nearer the platen and substantially coterminous with the first rod,

means tying together the ad-- supportin jacent. en s of the rods, extensions of said finger-piece engaging'the lighter rod, and afeed-roll lying between said extensions and encircling said lighter rod asits journal.

10. In a typewriting machine, the combination with a platen having an'axle and a platen frame, of a stiff rod, a finger-piece slidable upon said "stiff rod, a lighter rod lying between the stiff rod and'the platen axle, so that the two .rods are arranged radially of the platen, extensions of said finger-piece embracing. the lighter IO-(1,5150

that the lighter rodQis stifl'ened'by the stiff...

rod, a feed-roll lying between'jsaid extensions, and a revoluble mounting for said rods connected to said frameto' enable them to be swung to and from the platen to carry the'feed-roll to or from the platen.

jity of bars extending brace member connecting together and slidframe, of a stiff rod, a finger-piece slidable upon said stiff rod, alighterrod lying between the stiff rod and the platen axle, so

that the two rods are arranged radially of the platen, extensions of said finger-piece embracing the lighter rod, so that the lighter rod is stiffened by the stiff rod, a feed-roll lyingbetween said extensions and journaled on the lighter rod, and a bracket detachably' connected to said frame, said bracket comprisingjournals and a support for said rods j ournaled in said bracket, said support comprising means for tying. together the adjacent ends of said rods.

12. In a typewriting machine, the combination, with a platen and a frame having ends, of, a bracket detachably connected to each end, a bearing in each bracket, a shaft rotatable in each bearing, a plate fast to each shaft, a pair of rods forming'a truss device connecting said plates, a feed-roll encircling one of said rods as its journal, a brace embracing both said rods to truss them and having ends which lie on each sideof the roll, and means normally holding said roll against the platen, but adapted to per; mit the plates to be rotated with the rods to carr the feed-roll away'from the platen,

13. n a typewriting machine, the combination witha platen and a-platen frame, of a stifl rod supported near the platen by said frame, a fin er-pie'ce slidable along said rod,

a lighter ro nearer the platen, extensionsof said finger-piece engaging the lighter rod, a-

feed-roll lying between saidextens ions and encircling said lighter rod as its journal,

plates upon which said rods are mounted,

brackets'on said frame forming supports for the'plates, and a spring normally turning the roll toward the platen, but adapted to let it be swung away from the platn.'

14. In a typewriting machine, the combination with a revoluble platen, of a plurality of bars extending along the platen,'a brace member connecting together and slidable upon said bars, and afeed-roll for the platen .carried bysaid bracemember to slide therewith. I

15.. In a typewritin machine, the combination with a revolub e laten, ofa plurala long the platen, a

able upon said bars, a feed-roll for the ,platen carried by said brace member to slide therewith, and supports for'the adjacent ends of :the bars movable to move'the feedroll int 'or out of cooperative relation with Witnesses: I 11. In a typewriting machine, thecombination with a platen having an axle and a -E B. LIBBY CATHnRIN'ri' 

